Initial Perceived Quality Analysis for DASH Video Streaming
Jiarun Song, Ruihuan Wang, Fuzheng Yang, Zhibin Ma, Qiyong Zhao · 2018
Dynamic Adaptive Streaming over HTTP (DASH) uses pre-buffering mechanism to ensure smoothly playback of video streaming. However, it will lead to an additional initial loading delay, which significantly affects the initial perceived quality and may make the users give up the video services. In this paper, two kinds of subjective test methods were designed to obtain the initial perceived quality from the perspective of user perception process and rating habit, respectively. The initial perceived quality was rated at different stages of viewing period in these two methods and the accuracy of the initial perceived quality obtained by these two methods was compared. Then, the relationship between the initial loading delay and user quit rate was analyzed, which can be served as a guideline for service providers and network operators to improve their services.